system/room equalized flat from 20 to 20k cps--is yours?

A room equalized flat to 20kHz at multiple listening spots will sound very bright.  You want high frequencies smoothly rolled off starting around 7kHz.

Everything we listen to, in every room and hall has a different frequency response. I'm not sure that trying to make an imperfect room perfect is the right direction to go. Would not reproduced sounds not sound right if corrected? Say you have a man playing a guitar in the room. When you play that back would you alter it from it's original sound? 

Nope.

Cheers,

Scott

Yes.  Thank you, next. :D

Why would you want to do that?